I use velcro to hang my temp/humid. gauge on.
I was wondering how the snake getting in contact would hurt it?
It's not sticky, one side is soft and the other is plastic brishels
Nothing on the velcro I use for the snake to stick to.
Just wondering

As for the list
duct tape to tape the outside of the screen up, this will help with the humidity issues.
I also always recommend a thermostat connected to any heating device, it's a good safe thing to use and will maintain proper temps even when temps in the room change.
Good Luck